According to Dr Anjali Mahto, consultant dermatologist at Skin 55, the sun is the biggest environmental culprit in accelerated skin ageing (cue wrinkles and pigmentation) which is why it really pays to apply a daily broad spectrum SPF to sun-exposed areas such as the face, neck and hands.

If you aren’t sure when to slot SPF into your skincare routine, Dr Mahto suggests that it should be applied after serum and moisturiser in the morning. Make sure enough time is given for each layer of products to dry and absorb into the skin before applying the next layer. If you’re prone to acne, make sure your SPF is oil-free and non-comedogenic, so that it won’t clog your pores.

SPF 100: Do you really need to use such a high sunscreen factor?